Simplex Trading Portfolio holdings
Simplex Trading, founded in 2004 and headquartered in Chicago, Illinois, is a technology-driven proprietary trading firm specializing in market-making and liquidity provision, primarily in U.S. equity options and futures options. Leveraging advanced proprietary software and data-driven analysis, the firm optimizes trading strategies and develops innovative solutions to capitalize on financial market opportunities, maintaining a competitive edge through automation and a collaborative team of technologists and traders. With a workforce exceeding 300 and led by CEO Erik Swanson since 2014, Simplex operates with a low-ego, high-intelligence culture, focusing on minimal bureaucracy and rapid execution, while also making strategic venture capital investments in fintech startups. Recognized as a top workplace in Chicago by Built In’s 2025 awards, Simplex continues to evolve, blending cutting-edge technology with a commitment to market efficiency and growth.
Top Buys
| Rank | Stock | Value |
|---|---|---|
| 1 |
Amazon
AMZN
|
+$168M |
| 2 |
NVIDIA
NVDA
|
+$141M |
| 3 |
TSMC
TSM
|
+$121M |
| 4 |
Meta Platforms (Facebook)
META
|
+$107M |
| 5 |
SPDR Gold Trust
GLD
|
+$103M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Apple
AAPL
|
+$174M |
| 2 |
Western Digital
WDC
|
+$87.7M |
| 3 |
Broadcom
AVGO
|
+$62.2M |
| 4 |
Direxion Daily Semiconductor Bull 3X ETF
SOXL
|
+$52M |
| 5 |
Netflix
NFLX
|
+$44.6M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.62% |
| 2 | Communication Services | 0.22% |
| 3 | Consumer Discretionary | 0.21% |
| 4 | Healthcare | 0.2% |
| 5 | Industrials | 0.1% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
4826
NXP Semiconductors
NXPI
$68B
| $125K | ﹤0.01% |
+633
| New | +$140K |
|
4827
CALL
Paysign
PAYS
$486M
| $124K | ﹤0.01% |
21,100
-34,200
| -62% | -$139K |
|
4828
PUT
Pacific Biosciences
PACB
$422M
| $124K | ﹤0.01% |
+94,300
| New | +$169K |
|
|
USAR
4829
USA Rare Earth Inc
USAR
$3.46B
| $124K | ﹤0.01% |
+8,222
| New | +$160K |
|
4830
PUT
VeriSign
VRSN
$25.3B
| $124K | ﹤0.01% |
500
-100
| -17% | -$23.8K |
|
|
ROBN
4831
T-Rex 2X Long HOOD Daily Target ETF
ROBN
$91.2M
| $124K | ﹤0.01% |
7,235
+6,656
| +1,150% | +$212K |
|
|
LAND
4832
Gladstone Land Corp
LAND
$368M
| $124K | ﹤0.01% |
+12,169
| New | +$131K |
|
|
DDL
4833
PUT
Dingdong
DDL
$529M
| $124K | ﹤0.01% |
48,200
+40,900
| +560% | +$114K |
|
4834
CALL
Koppers
KOP
$966M
| $124K | ﹤0.01% |
3,200
+3,100
| +3,100% | +$104K |
|
4835
CALL
ClearPoint Neuro
CLPT
$423M
| $124K | ﹤0.01% |
13,600
-12,400
| -48% | -$157K |
|
4836
PUT
Groupon
GRPN
$980M
| $124K | ﹤0.01% |
10,400
-17,400
| -63% | -$232K |
|
4837
PUT
RF Industries
RFIL
$135M
| $124K | ﹤0.01% |
+12,000
| New | +$122K |
|
4838
PUT
Atkore
ATKR
$2.59B
| $124K | ﹤0.01% |
2,100
+200
| +11% | +$13K |
|
|
OGI
4839
CALL
Organigram Holdings
OGI
$132M
| $124K | ﹤0.01% |
92,200
+70,300
| +321% | +$104K |
|
4840
CALL
Alpha Metallurgical Resources
AMR
$1.82B
| $123K | ﹤0.01% |
+600
| New | +$122K |
|
|
SAIL
4841
CALL
SailPoint Inc
SAIL
$8.48B
| $123K | ﹤0.01% |
9,300
-7,800
| -46% | -$122K |
|
|
SFD
4842
CALL
Smithfield Foods
SFD
$10.3B
| $123K | ﹤0.01% |
4,400
+4,300
| +4,300% | +$103K |
|
4843
CALL
Banc of California
BANC
$3.28B
| $123K | ﹤0.01% |
7,000
-43,100
| -86% | -$823K |
|
|
GDXY
4844
YieldMax Gold Miners Option Income Strategy ETF
GDXY
$206M
| $123K | ﹤0.01% |
+8,800
| New | +$143K |
|
4845
CALL
Vital Farms
VITL
$558M
| $123K | ﹤0.01% |
8,700
-29,300
| -77% | -$692K |
|
4846
CALL
Ryder
R
$10.3B
| $123K | ﹤0.01% |
+600
| New | +$121K |
|
4847
Janus Henderson AAA CLO ETF
JAAA
$29.1B
| $123K | ﹤0.01% |
2,434
+1,981
| +437% | +$100K |
|
4848
Microvast
MVST
$267M
| $122K | ﹤0.01% |
+81,653
| New | +$197K |
|
|
AUGO
4849
CALL
Aura Minerals Inc
AUGO
$4.58B
| $122K | ﹤0.01% |
1,500
+1,000
| +200% | +$70.1K |
|
4850
CALL
Tonix Pharmaceuticals
TNXP
$157M
| $122K | ﹤0.01% |
+8,900
| New | +$137K |
|
Similar funds
Simplex Trading's Q1 2026 Portfolio in Review
As of Q1 2026, Simplex Trading held 10,500 positions worth $149B, down 16% from $177B the previous quarter. Its ten largest holdings account for 51% of the portfolio.
Simplex Trading withdrew a net $18.1B in Q1 2026, closing 1,574 positions and reducing 3,926 holdings. Its most notable exit was Direxion Daily Semiconductor Bull 3X ETF, an estimated $52M position sold in full.
By sector, the portfolio is most concentrated in Technology at 0.62% of assets, up from 0.59% a quarter earlier, followed by Communication Services and Consumer Discretionary.
Against the trend, Simplex Trading opened a new position in Amazon worth $159M.
- Simplex Trading's largest Q1 2026 buy was Amazon: 764,884 shares worth $159M.
- Simplex Trading added most to NVIDIA in Q1 2026, an estimated $141M increase.
- Simplex Trading's biggest Q1 2026 reduction was Apple, cutting an estimated $174M.
- Simplex Trading fully exited Direxion Daily Semiconductor Bull 3X ETF in Q1 2026, selling an estimated $52M.
- Simplex Trading's ten largest holdings make up 51% of its $149B portfolio in Q1 2026.
- Simplex Trading opened 2,156 new positions and closed 1,574 in Q1 2026.
- Simplex Trading's portfolio value fell 16% quarter-over-quarter to $149B.
Based on Simplex Trading's 13F filing for Q1 2026, filed 14 May 2026.